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From 689e07f1db7dbd6d5bd7ba7a2e43a2c4245dd8b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Tue, 8 Mar 2016 17:58:35 +0100
Subject: [PATCH 0380/1110] drm/amdgpu: Revert "add lock for interval tree in
vm"
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Not needed any more because we need to protect the elements on the list anyway.
This reverts commit fe237ed7efec8ac147a4572fdf81173a7f8ddda7.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 -
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 16 ++--------------
2 files changed, 2 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 66aef04..929bf7f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -847,7 +847,6 @@ struct amdgpu_vm_id {
struct amdgpu_vm {
/* tree of virtual addresses mapped */
- spinlock_t it_lock;
struct rb_root va;
/* protecting invalidated */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index c6b890c..f6d7d3f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -1112,9 +1112,7 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
saddr /= AMDGPU_GPU_PAGE_SIZE;
eaddr /= AMDGPU_GPU_PAGE_SIZE;
- spin_lock(&vm->it_lock);
it = interval_tree_iter_first(&vm->va, saddr, eaddr);
- spin_unlock(&vm->it_lock);
if (it) {
struct amdgpu_bo_va_mapping *tmp;
tmp = container_of(it, struct amdgpu_bo_va_mapping, it);
@@ -1141,10 +1139,7 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
mutex_lock(&bo_va->mutex);
list_add(&mapping->list, &bo_va->invalids);
mutex_unlock(&bo_va->mutex);
- spin_lock(&vm->it_lock);
interval_tree_insert(&mapping->it, &vm->va);
- spin_unlock(&vm->it_lock);
- trace_amdgpu_vm_bo_map(bo_va, mapping);
/* Make sure the page tables are allocated */
saddr >>= amdgpu_vm_block_size;
@@ -1196,9 +1191,7 @@ int amdgpu_vm_bo_map(struct amdgpu_device *adev,
error_free:
list_del(&mapping->list);
- spin_lock(&vm->it_lock);
interval_tree_remove(&mapping->it, &vm->va);
- spin_unlock(&vm->it_lock);
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
kfree(mapping);
@@ -1248,9 +1241,7 @@ int amdgpu_vm_bo_unmap(struct amdgpu_device *adev,
}
mutex_unlock(&bo_va->mutex);
list_del(&mapping->list);
- spin_lock(&vm->it_lock);
interval_tree_remove(&mapping->it, &vm->va);
- spin_unlock(&vm->it_lock);
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
if (valid)
@@ -1285,17 +1276,13 @@ void amdgpu_vm_bo_rmv(struct amdgpu_device *adev,
list_for_each_entry_safe(mapping, next, &bo_va->valids, list) {
list_del(&mapping->list);
- spin_lock(&vm->it_lock);
interval_tree_remove(&mapping->it, &vm->va);
- spin_unlock(&vm->it_lock);
trace_amdgpu_vm_bo_unmap(bo_va, mapping);
list_add(&mapping->list, &vm->freed);
}
list_for_each_entry_safe(mapping, next, &bo_va->invalids, list) {
list_del(&mapping->list);
- spin_lock(&vm->it_lock);
interval_tree_remove(&mapping->it, &vm->va);
- spin_unlock(&vm->it_lock);
kfree(mapping);
}
fence_put(bo_va->last_pt_update);
@@ -1354,7 +1341,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
INIT_LIST_HEAD(&vm->invalidated);
INIT_LIST_HEAD(&vm->cleared);
INIT_LIST_HEAD(&vm->freed);
- spin_lock_init(&vm->it_lock);
+
pd_size = amdgpu_vm_directory_size(adev);
pd_entries = amdgpu_vm_num_pdes(adev);
@@ -1438,6 +1425,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
amdgpu_bo_unref(&vm->page_directory);
fence_put(vm->page_directory_fence);
+
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_vm_id *id = &vm->ids[i];
--
2.7.4
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